کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10239040 | 46021 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen production from methane by steam reforming in a periodically operated two-layer catalytic reactor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hydrogen production from methane by steam reforming in a periodically operated two-layer catalytic reactor Hydrogen production from methane by steam reforming in a periodically operated two-layer catalytic reactor](/preview/png/10239040.png)
چکیده انگلیسی
Almost CO-free hydrogen gas, which could be directly used as a feed for a PEM fuel cell, can be produced by a novel steam reforming process of methane in a fixed bed reactor which contains two different catalysts layers which go through a periodic reduction/re-oxidation cycle. During the reduction phase, water-free methane is converted at the first layer (Pt-Ce0.5Zr0.5O2) into a mixture of СРand Ð2 by partial oxidation. This mixture is fed directly to a second layer of Fe2O3-Ce0.5Zr0.5O2 where the products of the methane partial oxidation reduce the iron-containing catalyst whereby giving CO2 and H2O. During the re-oxidation phase of the cycle, the two-layer reactor is fed with pure steam which is converted into a CO-free hydrogen gas whereby leading to the re-oxidation of the catalytic materials in both layers so that that they can be reused in the next redox cycle. The present study reports the preparation and characterization of suitable catalytic materials, related activity tests and kinetic studies which demonstrate the feasibility of the proposed process concept.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 289, Issue 2, 10 August 2005, Pages 121-127
Journal: Applied Catalysis A: General - Volume 289, Issue 2, 10 August 2005, Pages 121-127
نویسندگان
Vladimir Galvita, Kai Sundmacher,